Atotal of $21,000 is invested in two bonds that pay 4% and 7.5% simple interest. the bond with 7.5 % interest rate earned 6 times as much interest. as the bond with a 4 % interest. rate. how much is invested in each bond? what was the total interest earned?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.